Door casing gauge



June 21, 1949. J, w, ERICKSON DOOR CASING GAUGE Filed April 24, 1944- Patented June 21, 1949 UNITED STATES T OFFICE DOOR CASING GAUGE John W. Erickson, Seattle, Wash.

Application April 24, 1944, Serial No. 532,501

1 Claim. 1

The present invention relates to new and useful improvements in carpenters tools, and more particularly to a door casing gauge adapted for marking the edges of a door jamb in order to cut the trim formed thereon.

An important object of the present invention is to provide a door casing gauge of this character embodying means for marking the corner of the door jamb as well as to mark the sides and head of the jamb.

- A further important object of the invention is to provide a gauge of this character adapted to facilitate proper positioning the side casing on the door jamb.

A still further object is to provide a casing gauge for doors of simple and practical construction, which is efficient and reliable in use, relatively inexpensive to manufacture and otherwise well adapted for the purpose for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a View in elevation showing the gauge in position for marking the corner of a door jamb as well as for marking the side thereof.

Figure 2 is a similar view showing the tool in position for attaching the side casing to the jamb.

Figure 3 is a longitudinal sectional view taken substantially on a line 3-3 of Figure 1.

Figure 4 is a transverse sectional view taken on a line 4-4 of Figure 3.

Referring now to the drawing in detail, the numeral 5 designates the body of the tool of flat relatively elongated form and having at one end a head 6 formed with inclined edges I and 8 disposed at right angles to each other.

Dovetailed grooves 9 and Ill (see Figure 4) are formed in the opposite surfaces of the body rearwardly of the head, the groove 9 having a dovetailed rib I I slidably mounted therein and formed on the under side of a gauge plate I2. The gauge plate I2 is also formed with a head I3 having inclined side edges I4 and I5 likewise at right angles to each other and parallel to the edges 7 and 8, respectively, of the head 6.

A longitudinal slot I6 is formed in the ribbed portion of the gauge plate I2 in which a screw I! is freely positioned, the screw being threaded into the body 5. A button I8 is carried by the screw on top of the gauge plate I2 for clamping 2 the gauge plate in adjusted position on the body 5 by the tightening of the screw H.

The rear end of the gauge plate I2 extends beyond the body 5 and is provided with a marking screw It threaded therein and having a pointed end 28 projecting below the gauge plate l2.

The under side of the rearwardly extending end of the gauge plate i2 is formed with a scale 2 I.'

A second gauge plate 22 of dovetailed shape in cross section is slidably mounted in the groove It) at the side of the body 5 opposite from the gauge plate 112 and the gauge plate 22 is likewise formed with a longitudinal slot 23 in which a screw 24 is freely positioned and threaded into the body 5. A button 253 is carried by the screw 24 for securing the gauge plate 22 in adjusted position by the tightening of said last-named screw.

The rear end of the gauge plate 22 is formed with an upstanding flange 28 having a notch 21 in its end slidably receiving the rear end of the gauge plate I2.

In the operation of the tool, the head I3 of the gauge plate I2 is moved inwardly from the front edge of the head 6 of the body so that the head 6 will project outwardly beyond the head I3, as shown in Figure 3 of the drawing. The tool is then placed at the corner of the door jamb designated generally at 3D with the right angular edges It and it of the head I3 in abutting engagement with the inner surface of the head 28 and side 29 of the jamb. The right angular side edges 71 and 8 of the head 6 will thus overlie the sides of the head 28 and side 29 of the jamb to act as a guide for marking the jamb with a pencil or other instrument applied to the adjacent face of the jamb along the edges of the applied head it of the tool to indicate the depth of the cut for forming the trim on the jamb.

The tool is then turned into the position shown at the lower portion of Figure 1 of the drawing so that the flange 25: will abut the inner surface of the side 28 of the jamb and with the marking point is in contact with the edge of the jamb so that upon sliding the tool along the jamb, the jamb will be properly marked for cutting the trim.

The tool may also be used for indicating the position of the side casing 30' to be placed on the jamb by positioning the tool in the corner of the jamb, as shown in Figure 2 of the drawing, the edge of the head 6 serving as an abutment for the casing.

It is believed the details of construction, operation and advantages of the tool will be readily ture at substantially equal angles to said center line, said body having in each facethereof arer spective undercut groove extending along said center line from said one end of said body to locations adjacent said opposite end of the latter, an elongatedgauge plate overlying one side of said body and having a, longitudinally extending rib thereon slidablyreceived in the corresponding groove of said body; saidgauge plate including a" narrow portion extending beyond said one end of said body and a marginally flanged wide portion-having mutually perpendicular end edges respectively parallel to the mutually perpendicular and edges of said body, a slide slidably engaged in the groove in the other side of said; body and having at one end an elongated, perpendicularly disposed flange parallel to said one end of said body and provided in its edge with a notch slidably receiving the narrow portion of said gauge plate, a scribe point carried by said gauge plate outwardly of said flange and positioned at a predetermined distance from said flange, regardless of the longitudinal position of said guide plate relative to said body, by sliding said slide relative to said. body, Said gauge plate andsaidslide having respective longitudinally extending slots therein, and respective clamp screws extending from said body through said gauge plate and slide slots to releasably clamp said gauge plate and said slide in adjusted position longitudinally of said body.

JOHN W. ERICKSON.

REFERENCES CITED The following referenlces are of record in the file oi this. patent:

UNITED, STATES PATENTS;

Number Name Date 924,877 Banfill June 15,1909, 1,787,313 Houts A Dec. 30, 1930- 2,112,179 Sharrar u ique-us. Mar. 22, 1938, 2, ,697 a erandci Jan..- 24,. 939' FOREIGN. PATENTS Number Country Date- 108',239 Sweden Aug: 1.7; 1943 

